(PHP 5, PHP 7, PHP 8)
ReflectionClass::isInstance — Checks class for instance
Checks if an object is an instance of a class.
objectThe object being compared to.
Beispiel #1 ReflectionClass::isInstance() related examples
<?php
// Example usage
$class = new ReflectionClass('Foo');
if ($class->isInstance($arg)) {
echo "Yes";
}
// Equivalent to
if ($arg instanceof Foo) {
echo "Yes";
}
// Equivalent to
if (is_a($arg, 'Foo')) {
echo "Yes";
}
?>Das oben gezeigte Beispiel erzeugt eine ähnliche Ausgabe wie:
Yes Yes Yes
class TestClass { }
$TestObj=new TestClass();
$TestObj_assigned=$TestObj;
$TestObj_Refrenced=&$TestObj;
$TestObj_cloned=clone $TestObj;
$obj=new ReflectionClass('TestClass');
var_dump($obj->isInstance($TestObj));
var_dump($obj->isInstance($TestObj_assigned));
var_dump($obj->isInstance($TestObj_Refrenced));
var_dump($obj->isInstance($TestObj_cloned));